During weekdays, Richard is working as a part-time library assistant at a university. He needs to work for a total of 30 hours a week. For the first three days of the week, he worked 21 1/5 hours. Complete the working equation that represents the number of hours, h, Richard needs to work to reach 30 hours for the week and solve the equation. (1 point)
h + 21 1/6 =
h= Box hours
h + 21 1/5 = 30 hours
h = 30 - 21 1/5
h = 30 - 105/5
h = 30 - 21
h = 9 hours